   |
|||||
   |
|||||
5. Hydrodynamic cleaning classification according to level of pressures applied. At present, the statutory act that is referred to most frequently for classifying the type for high-pressure works, as well as the cleanliness of the surface is the American standard SSPC-SP12/NACE INTERNATIONAL No.5. The above standard includes vocabulary for performed works according to the use of water in relation to the level of applied pressures. Low-Pressure Water Cleaning (LP WC) using low-pressure water stream. It signifies works using pressures lower than 34 MPa. This technique is applied for washing various facilities, equipment and parts, removing loose pain coatings, washing sanitary installations or wet sanding. High-Pressure Water Cleaning (HP WC), i.e. cleaning with high-pressure water stream regards the works carried out using water stream with pressures from 34 to 70 MPa. Such pressure levels are used to wash heavy dirt (construction machinery, concrete moulds, light kerosene fractions, shuttering, etc.), and it also enables: to clean concrete surfaces, remove paint coatings, remove vertical road signs, remove corroded and destroyed concrete, wet sanding, wash off petroleum products. This level of pressures is used for cleaning ROPP and ROSS fillings. High-Pressure Water Jetting (HP WJ), cleaning with high-pressure water stream from 70-170 MPa. Application: roughening of concrete surfaces, removal of plaster and corroded concrete layers, exposing reinforcing steel, removing paint coatings with good adhesion and special coatings, cleaning of heat exchangers, cleaning pain equipment or hydrodynamic pipeline cleaning. Ultra High-Pressure Water Jetting (UHP WJ), cleaning with ultra high-pressure water stream over 170 MPa. Application: removing any tarnishes and deposits on metal surfaces, removing coatings, including elastic coatings, cutting materials with water (metals, stone, concrete) with or without added abradant (sand). |
|
 |
© Ecol Sp. z o.o. All rights reserved. |